2010 Yamaha Motorsports Apex Owners Manual - Page 63
2010 Yamaha Motorsports Apex Manual
Page 63 highlights
Periodic maintenance and adjustment 15. Install and tighten the oil filler cap. 16. Start the engine, and then let it idle for several minutes while checking it for oil leakage. If oil is leaking, immediately turn the engine off and make sure that the engine oil drain bolt, oil tank drain bolt, and the oil filler cap are installed correctly. 17. Turn the engine off, and then connect the oil level gauge coupler. 18. Install the bottom panel and the right lower cover, and then install the right side cover and the shroud. NOTICE: If oil is leaking or the oil level warning indicator comes on when the engine is running, immediately turn the engine off and have a Yamaha dealer check the snowmobile. Continuing to operate the engine under such conditions could cause severe engine damage. [ECS00471] ESU12015 Cooling system The coolant level should be checked before each ride. In addition, the cooling system must be bled at the intervals specified in the periodic maintenance and lubrication chart. EWS00380 To check the coolant level 1. Place the snowmobile on a level surface and apply the parking brake. 2. Remove the top cover. (See page 46 for removal procedures.) 3. Check the coolant level in the coolant recovery tank when the engine is cold. If the coolant level is below the "COLD LEVEL" mark, add coolant until it reaches the "COLD LEVEL" mark. (See the following section "Replenishing the coolant" for more details.) NOTICE: If coolant is not available, use distilled water or soft tap water instead. Do not use hard water or salt water since it is harmful to the engine. If water has been used instead of coolant, replace it with coolant as soon as possible, otherwise the cooling system will not be protected against frost and corrosion. If water has been added to the coolant, have a Yamaha dealer check the antifreeze content of the coolant as soon as possible, otherwise the effectiveness of the coolant will be reduced. [ECS00492] WARNING Do not remove the coolant reservoir cap when the engine is hot. Scalding hot fluid and steam may be blown out under pressure, which could cause serious injury. When the engine has cooled, place a thick rag or towel over the coolant reservoir cap, and slowly rotate the cap counterclockwise to the detent. This procedure allows any residual pressure to escape. When the hissing sound has stopped, press down on the cap while turning counterclockwise and remove it. 57